1997 MERCEDES-BENZ ML320 Complete Repair Manual

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Page 1537 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual REAR INTERMITTENT WIPE - FUNCTION - GF82.30-P-3001GH
MODEL 163 Applicable to 31.8.00
The rear intermittent wipe function is activated by placing the rear wiper/washer switch (S78) in the up
positi

REAR INTERMITTENT WIPE - FUNCTION - GF82.30-P-3001GH
MODEL 163 Applicable to 31.8.00
The rear intermittent wipe function is activated by placing the rear wiper/washer switch (S78) in the up
position. With the switch in this position, the All Activity Module (AAM) (N10) activates the tailgate wiper
motor (M6/4) every five seconds.
A relay circuit in the wiper motor stops the wiper arm in the park position.
REAR INTERMITTENT WIPE - FUNCTION - GF82.30-P-3001GK
MODEL 163 Applicable as of 1.9.00
The rear intermittent wipe function is linked, among other things, to the operation of the windshield wiper
system. It will therefore be described in relation to the position of the combination switch (S4):
Combination switch (S4) position: OFF
The rear wiper is powered from KI. 15R: ON by operating the rear wiper/washer switch (S78) . Switching
on the wiper illuminates the LED on the rear wiper/washer switch (S78) and immediately causes the wiper arm
to perform one complete sweep before switching to intermittent wiping.
When the vehicle is traveling at speeds of
less than 100 km/h the wipe interval is 10 seconds
of 100 km/h or more the wipe interval is 5 seconds .
The wiper is turned off by reactivating the wiper/washer switch.
Combination switch (S4) position: Wiper speed 1 or 2
The rear wiper is activated from KI. 15R: ON using the rear wiper/washer switch (S78) .
Switching on the wiper illuminates the LED on the rear wiper/ washer switch (S78) and immediately
causes the wiper arm to perform one complete sweep before switching to intermittent wiping. The wipe
interval is 5 seconds .
Survey on wiper system
components (WS), location/
purpose/design/function GF82.30-P-9998GH
Rear wiper/washer switch GF82.30-P-4105GH
All Activity ModuleTo 30.11.99GF54.21-P-4100GH
As of 1.12.99GF54.21-P-4100GK
Tailgate wiper motor GF82.30-P-4105GH

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 42 © 2006 Mitchell Repair Information Company, LLC.

Page 1538 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual The wiper is turned off by reactivating the wiper/washer switch.
The rear wiper switches on automatically from KI. 15R: ON when reverse gear is engaged. The wiper
operates continuously without del

The wiper is turned off by reactivating the wiper/washer switch.
The rear wiper switches on automatically from KI. 15R: ON when reverse gear is engaged. The wiper
operates continuously without delays until reverse gear is disengaged. Note: The LED on the rear
wiper/washer switch (S78) does not illuminate when vehicle is in reverse gear.
Combination switch (S4) position: Intermittent
When the combination switch (S4) is in the Intermittent position we must differentiate between vehicles
with and without rain sensors (code 345a) when describing the rear wiper function.
No rain sensor (no code 345a)
The rear intermittent wipe function is activated as follows:
By engaging reverse gear ; from KI. 15: ON . The wiper arm immediately performs one complete
sweep.
Then the rear wiper switches to intermittent wiping at a frequency half that of the front windshield
wiper until the vehicle is put into neutral or another gear.
By activating the rear wiper/washer switch (S78) ; from KI. 15R: ON . Switching on the wiper
illuminates the LED on the rear wiper/washer switch (S78) and immediately causes the wiper arm to
perform one complete sweep. Then the rear wiper switches to intermittent wiping at a frequency half
that of the front windshield wiper. The wiper is turned off by reactivating the wiper/washer switch.
The start of each wipe cycle is synchronized with the front wiper system.
With rain sensor (with code 345a)
The rear intermittent wipe function is activated as follows:
By engaging reverse gear ; from KI. 15: ON . The wiper arm immediately performs one complete
sweep. Then the rear wiper switches to intermittent wiping at a frequency equal to that of the front
windshield wiper until the vehicle is put into neutral or another gear.
By activating the rear wiper/washer switch (S78) ; from KI. 15: ON. Switching on the wiper
illuminates the LED on the rear wiper/washer switch (S78) and immediately causes the wiper arm to
perform one complete sweep before switching to intermittent wiping. The frequency is linked to the
frequenc
y of the front windshield wiper and is thus controlled by the rain (B38)sensor . NOTE: The LED on the rear wiper/washer switch (S78) does not illuminate when
the vehicle is in reverse gear.
NOTE: The LED on the rear wiper/washer switch (S78) does not illuminate when
the vehicle is in reverse gear.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 43 © 2006 Mitchell Repair Information Company, LLC.

Page 1539 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual The actual frequency is also a factor of the vehicles speed of travel (see chart below).
The wiper is turned off by reactivating the wiper/washer switch.
The start of each wipe cycle is synchronize

Page 1540 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual Power is supplied to the motor by the cam switch and non-actuated contact of the relay F1 k17(pin b) until the
wiper arm has reached its park position. When the park position is reached the cam switc

Page 1541 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual WIPER, FUNCTION - GF82.30-P-3004GH
MODEL 163
The function wiping windshield is switched in three stages with the combination switch (S4)
One-touch wiping - press switch lever upward to first c

Page 1542 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual SAFETY SHUTOFF (WSA) - FUNCTION - GF82.30-P-3005GH
MODEL 163 Applicable as of 1.9.00
Safety shutoff
The intermittent wipe function is interrupted when the vehicle comes to a complete stop and at

Page 1543 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual How it works
An infrared transmitter (2)sends infrared light to a lens (1) which directs the beam to the windshield (4) . The
intensity of the light reflected by the windshield is measured by an IR

Page 1544 of 4133

MERCEDES-BENZ ML320 1997 Complete Repair Manual system . Data from the light sensors is also sent to the All Activity Module (AAM, N10) via the engine
compartment CAN.
Power supply
Power is supplied to the rain sensor (B38) via KI. 15 so that

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